Sweden & The Netherlands.
Great Britain, France and Spain were the largest of the five nations to colonize North America, but Sweden and The Netherlands (Holland) also settled in the continent.
The Dutch settled in what is modern day New York City and New Jersey; New York was originally called "New Amsterdam". Although in 1664, the British took over New Amsterdam and much of the Dutch colonies.
Sweden also colonized a small part where New Jersey, Pennsylvania and Delaware meet in 1638. However, they pulled out in 1655 when the Dutch took over the colony.